November 9, 2020 Dataset Open Access

Neugebauer, Nils; Hache, Toni; Elm, M.; Hofmann, D. M.; Heiliger, C.; Schultheiß, Helmut; Klar, P. J.

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  <identifier identifierType="DOI">10.14278/rodare.578</identifier>
  <creators>
    <creator>
      <creatorName>Neugebauer, Nils</creatorName>
      <givenName>Nils</givenName>
      <familyName>Neugebauer</familyName>
    </creator>
    <creator>
      <creatorName>Hache, Toni</creatorName>
      <givenName>Toni</givenName>
      <familyName>Hache</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8245-5153</nameIdentifier>
    </creator>
    <creator>
      <creatorName>Elm, M.</creatorName>
      <givenName>M.</givenName>
      <familyName>Elm</familyName>
    </creator>
    <creator>
      <creatorName>Hofmann, D. M.</creatorName>
      <givenName>D. M.</givenName>
      <familyName>Hofmann</familyName>
    </creator>
    <creator>
      <creatorName>Heiliger, C.</creatorName>
      <givenName>C.</givenName>
      <familyName>Heiliger</familyName>
    </creator>
    <creator>
      <creatorName>Schultheiß, Helmut</creatorName>
      <givenName>Helmut</givenName>
      <familyName>Schultheiß</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-6727-5098</nameIdentifier>
    </creator>
    <creator>
      <creatorName>Klar, P. J.</creatorName>
      <givenName>P. J.</givenName>
      <familyName>Klar</familyName>
    </creator>
  </creators>
  <titles>
    <title>Frequency- and magnetic-field-dependent properties of ordered magnetic nanoparticle arrangements</title>
  </titles>
  <publisher>Rodare</publisher>
  <publicationYear>2020</publicationYear>
  <dates>
    <date dateType="Issued">2020-11-09</date>
  </dates>
  <resourceType resourceTypeGeneral="Dataset"/>
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    <alternateIdentifier alternateIdentifierType="url">https://rodare.hzdr.de/record/578</alternateIdentifier>
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    <relatedIdentifier relatedIdentifierType="URL" relationType="IsIdenticalTo">https://www.hzdr.de/publications/Publ-31690</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsReferencedBy">https://www.hzdr.de/publications/Publ-31689</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.14278/rodare.577</relatedIdentifier>
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    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/ibc</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/rodare</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;We present a frequency and magnetic field dependent investigation of ordered arrangements of 20 nm magnetic&lt;br&gt;
nanoparticles (MNPs) consisting of magnetite (Fe3O4) by employing micro Brillouin light scattering&lt;br&gt;
microscopy. We utilized electron beam lithography to prepare hexagonally arranged, circularly shaped MNPassemblies&lt;br&gt;
consisting of a single layer of MNPs using a variant of the Langmuir-Blodgett technique. By&lt;br&gt;
comparing the results with non-structured, layered superlattices of MNPs, further insight into the influence&lt;br&gt;
of size and geometry of the arrangement on the collective properties is obtained. We show that at low static&lt;br&gt;
external field strengths, two signals occur in frequency dependent measurements for both non-structured and&lt;br&gt;
structured assemblies. Enlarging the static external field strength leads to a sharpening of the main signal,&lt;br&gt;
while the satellite signal decreases in its intensity and increases in its linewidth. The occurrence of multiple&lt;br&gt;
signals at low external field strengths is also confirmed by sweeping the static external field and keeping the&lt;br&gt;
excitation frequency constant. Micromagnetic simulations unravel the origin of the different signals and their&lt;br&gt;
dependence on the static external field strength, enabling an interpretation of the observed characteristics in&lt;br&gt;
terms of different local environments of an MNPs forming the MNP assembly.&lt;/p&gt;</description>
  </descriptions>
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